On 27/02/2011 22:08, Isaac Marino Bavaresco wrote:
> Beware of the high dielectric constant dielectrics, some of them also
> exhibit a high piezoelectric effect (microphonics). Perhaps not a
> problem for most applications but may be troublesome for others.
pretty much ceramics all do I think. It's more noticeable maybe with=20
higher voltages.

it make it interesting discharging 50KV 1nF caps

A charge of several kV re-appears some minutes later as the material=20
recovers after a momentary discharge.



--=20
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